Value Collection R63644851 Carriage Bolt 1/4-20 18-8 Ss

Product Description

The VALUE COLLECTION R63644851 is a 1/4-20 carriage bolt with a 1-1/4 inch length under head, manufactured from 18-8 stainless steel with a bright uncoated finish. The square neck design below the domed head locks into place in a mating square hole or wood substrate, preventing the fastener from rotating during nut tightening without requiring a wrench on the bolt head. The UNC thread form ensures broad compatibility with standard inch-series nuts and tapped holes. This bolt is suited for general mechanical assembly, woodworking, and light structural connections where corrosion resistance is a priority.

Carriage bolts of this size are commonly used in residential and light commercial construction, deck framing, fence assembly, and equipment mounting applications. The 18-8 stainless steel construction makes this fastener a practical choice in outdoor, wet, or mildly corrosive environments where carbon steel hardware would degrade. Licensed contractors, millwrights, and maintenance technicians use fasteners of this type when code or project specifications call for corrosion-resistant hardware.

Key Features

• 1/4-20 UNC thread form for compatibility with standard inch-series hardware
• 1-1/4 inch length under head for precise grip-length specification
• Square neck below head prevents rotation during installation
• 18-8 stainless steel construction provides corrosion resistance in outdoor and wet environments
• Bright uncoated finish — no coating thickness to account for in tight-tolerance assemblies

Compatibility

Designed as a standard 1/4-20 UNC inch-series carriage bolt compatible with 1/4-20 hex nuts, wing nuts, and washers conforming to standard inch-series fastener dimensions.

Installation Notes

Installation requires a correctly sized square or round hole drilled through the mating material so the square neck seats flush and resists turning. Tighten from the nut side using an appropriate wrench or socket; no tool is applied to the domed head. Follow applicable building codes and project specifications for torque requirements and fastener spacing. Always verify the fastener material is appropriate for the service environment before installation.